feat: add music playlist

src/client/mod.rs

@@ -3,6 +3,7 @@
 pub(crate) mod response;
 
 mod channel;
+mod music_playlist;
 mod pagination;
 mod player;
 mod playlist;

src/client/music_playlist.rs

@@ -0,0 +1,207 @@
+use std::borrow::Cow;
+
+use crate::{
+    error::{Error, ExtractionError},
+    model::{ChannelId, MusicPlaylist, Paginator, TrackItem},
+    serializer::MapResult,
+    util::{self, TryRemove},
+};
+
+use super::{
+    response::{self, music_item::MusicListMapper},
+    ClientType, MapResponse, QBrowse, QContinuation, RustyPipeQuery,
+};
+
+impl RustyPipeQuery {
+    pub async fn music_playlist(&self, playlist_id: &str) -> Result<MusicPlaylist, Error> {
+        let context = self.get_context(ClientType::DesktopMusic, true, None).await;
+        let request_body = QBrowse {
+            context,
+            browse_id: "VL".to_owned() + playlist_id,
+        };
+
+        self.execute_request::<response::MusicPlaylist, _, _>(
+            ClientType::DesktopMusic,
+            "music_playlist",
+            playlist_id,
+            "browse",
+            &request_body,
+        )
+        .await
+    }
+
+    pub async fn music_playlist_continuation(
+        &self,
+        ctoken: &str,
+    ) -> Result<Paginator<TrackItem>, Error> {
+        let context = self.get_context(ClientType::DesktopMusic, true, None).await;
+        let request_body = QContinuation {
+            context,
+            continuation: ctoken,
+        };
+
+        self.execute_request::<response::MusicPlaylistCont, _, _>(
+            ClientType::DesktopMusic,
+            "music_playlist_continuation",
+            ctoken,
+            "browse",
+            &request_body,
+        )
+        .await
+    }
+}
+
+impl MapResponse<MusicPlaylist> for response::MusicPlaylist {
+    fn map_response(
+        self,
+        id: &str,
+        _lang: crate::param::Language,
+        _deobf: Option<&crate::deobfuscate::Deobfuscator>,
+    ) -> Result<MapResult<MusicPlaylist>, ExtractionError> {
+        // dbg!(&self);
+
+        let header = self.header.music_detail_header_renderer;
+
+        let mut content = self.contents.single_column_browse_results_renderer.contents;
+        let mut shelf = content
+            .try_swap_remove(0)
+            .ok_or(ExtractionError::InvalidData(Cow::Borrowed("no content")))?
+            .tab_renderer
+            .content
+            .section_list_renderer
+            .contents
+            .try_swap_remove(0)
+            .ok_or(ExtractionError::InvalidData(Cow::Borrowed(
+                "no sectionListRenderer content",
+            )))?
+            .music_shelf_renderer;
+
+        let playlist_id = shelf
+            .playlist_id
+            .ok_or(ExtractionError::InvalidData(Cow::Borrowed(
+                "no playlist id",
+            )))?;
+
+        if playlist_id != id {
+            return Err(ExtractionError::WrongResult(format!(
+                "got wrong playlist id {}, expected {}",
+                playlist_id, id
+            )));
+        }
+
+        let from_ytm = header
+            .subtitle
+            .0
+            .iter()
+            .any(|c| c.as_str() == "YouTube Music");
+
+        let channel = header
+            .subtitle
+            .0
+            .into_iter()
+            .find_map(|c| ChannelId::try_from(c).ok());
+
+        let mut mapper = MusicListMapper::<TrackItem>::new();
+        mapper.map_response(shelf.contents);
+
+        let ctoken = shelf
+            .continuations
+            .try_swap_remove(0)
+            .map(|cont| cont.next_continuation_data.continuation);
+
+        let track_count = match ctoken {
+            Some(_) => header
+                .second_subtitle
+                .first()
+                .and_then(|txt| util::parse_numeric::<u64>(txt).ok()),
+            None => Some(mapper.items.len() as u64),
+        };
+
+        Ok(MapResult {
+            c: MusicPlaylist {
+                id: playlist_id,
+                name: header.title,
+                thumbnail: header.thumbnail.into(),
+                channel,
+                description: header.description,
+                track_count,
+                from_ytm,
+                tracks: Paginator::new(track_count, mapper.items, ctoken),
+            },
+            warnings: mapper.warnings,
+        })
+    }
+}
+
+impl MapResponse<Paginator<TrackItem>> for response::MusicPlaylistCont {
+    fn map_response(
+        self,
+        _id: &str,
+        _lang: crate::param::Language,
+        _deobf: Option<&crate::deobfuscate::Deobfuscator>,
+    ) -> Result<MapResult<Paginator<TrackItem>>, ExtractionError> {
+        let mut mapper = MusicListMapper::<TrackItem>::new();
+        let mut shelf = self.continuation_contents.music_playlist_shelf_continuation;
+        mapper.map_response(shelf.contents);
+
+        let ctoken = shelf
+            .continuations
+            .try_swap_remove(0)
+            .map(|cont| cont.next_continuation_data.continuation);
+
+        Ok(MapResult {
+            c: Paginator::new(None, mapper.items, ctoken),
+            warnings: mapper.warnings,
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::{fs::File, io::BufReader, path::Path};
+
+    use rstest::rstest;
+
+    use super::*;
+    use crate::param::Language;
+
+    #[rstest]
+    #[case::short("short", "RDCLAK5uy_kFQXdnqMaQCVx2wpUM4ZfbsGCDibZtkJk")]
+    #[case::long("long", "PL5dDx681T4bR7ZF1IuWzOv1omlRbE7PiJ")]
+    #[case::nomusic("nomusic", "PL1J-6JOckZtE_P9Xx8D3b2O6w0idhuKBe")]
+    fn map_music_playlist(#[case] name: &str, #[case] id: &str) {
+        let filename = format!("testfiles/music_playlist/playlist_{}.json", name);
+        let json_path = Path::new(&filename);
+        let json_file = File::open(json_path).unwrap();
+
+        let playlist: response::MusicPlaylist =
+            serde_json::from_reader(BufReader::new(json_file)).unwrap();
+        let map_res = playlist.map_response(id, Language::En, None).unwrap();
+
+        assert!(
+            map_res.warnings.is_empty(),
+            "deserialization/mapping warnings: {:?}",
+            map_res.warnings
+        );
+        insta::assert_ron_snapshot!(format!("map_music_playlist_{}", name), map_res.c, {
+            ".last_update" => "[date]"
+        });
+    }
+
+    #[test]
+    fn map_music_playlist_cont() {
+        let json_path = Path::new("testfiles/music_playlist/playlist_cont.json");
+        let json_file = File::open(json_path).unwrap();
+
+        let playlist: response::MusicPlaylistCont =
+            serde_json::from_reader(BufReader::new(json_file)).unwrap();
+        let map_res = playlist.map_response("", Language::En, None).unwrap();
+
+        assert!(
+            map_res.warnings.is_empty(),
+            "deserialization/mapping warnings: {:?}",
+            map_res.warnings
+        );
+        insta::assert_ron_snapshot!("map_music_playlist_cont", map_res.c);
+    }
+}

src/client/pagination.rs

@@ -1,7 +1,7 @@
 use std::borrow::Cow;
 
 use crate::error::{Error, ExtractionError};
-use crate::model::{Comment, Paginator, PlaylistVideo, YouTubeItem};
+use crate::model::{Comment, Paginator, PlaylistVideo, TrackItem, YouTubeItem};
 use crate::param::ContinuationEndpoint;
 use crate::serializer::MapResult;
 use crate::util::TryRemove;
@@ -165,6 +165,15 @@ impl Paginator<PlaylistVideo> {
     }
 }
 
+impl Paginator<TrackItem> {
+    pub async fn next(&self, query: &RustyPipeQuery) -> Result<Option<Self>, Error> {
+        Ok(match &self.ctoken {
+            Some(ctoken) => Some(query.music_playlist_continuation(ctoken).await?),
+            None => None,
+        })
+    }
+}
+
 macro_rules! paginator {
     ($entity_type:ty) => {
         impl Paginator<$entity_type> {
@@ -216,6 +225,7 @@ macro_rules! paginator {
 
 paginator!(Comment);
 paginator!(PlaylistVideo);
+paginator!(TrackItem);
 
 #[cfg(test)]
 mod tests {

src/client/response/mod.rs

@@ -1,7 +1,8 @@
 pub(crate) mod channel;
+pub(crate) mod music_item;
+pub(crate) mod music_playlist;
 pub(crate) mod player;
 pub(crate) mod playlist;
-// pub(crate) mod playlist_music;
 pub(crate) mod search;
 pub(crate) mod trends;
 pub(crate) mod url_endpoint;
@@ -9,10 +10,11 @@ pub(crate) mod video_details;
 pub(crate) mod video_item;
 
 pub(crate) use channel::Channel;
+pub(crate) use music_playlist::MusicPlaylist;
+pub(crate) use music_playlist::MusicPlaylistCont;
 pub(crate) use player::Player;
 pub(crate) use playlist::Playlist;
 pub(crate) use playlist::PlaylistCont;
-// pub(crate) use playlist_music::PlaylistMusic;
 pub(crate) use search::Search;
 pub(crate) use trends::Startpage;
 pub(crate) use trends::Trending;
@@ -47,7 +49,7 @@ pub(crate) struct ContentsRenderer<T> {
     pub contents: Vec<T>,
 }
 
-#[derive(Debug, Deserialize)]
+#[derive(Default, Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub(crate) struct ThumbnailsWrap {
     #[serde(default)]
@@ -195,61 +197,6 @@ pub(crate) struct RichGridContinuation {
     pub contents: MapResult<Vec<YouTubeListItem>>,
 }
 
-// YouTube Music
-
-/*
-#[serde_as]
-#[derive(Debug, Deserialize)]
-#[serde(rename_all = "camelCase")]
-pub(crate) struct MusicItem {
-    pub thumbnail: MusicThumbnailRenderer,
-    #[serde(default)]
-    #[serde_as(deserialize_as = "DefaultOnError")]
-    pub playlist_item_data: Option<PlaylistItemData>,
-    #[serde_as(as = "VecSkipError<_>")]
-    pub flex_columns: Vec<MusicColumn>,
-    #[serde_as(as = "VecSkipError<_>")]
-    pub fixed_columns: Vec<MusicColumn>,
-}
-
-#[derive(Debug, Deserialize)]
-#[serde(rename_all = "camelCase")]
-pub(crate) struct MusicThumbnailRenderer {
-    #[serde(alias = "croppedSquareThumbnailRenderer")]
-    pub music_thumbnail_renderer: ThumbnailsWrap,
-}
-
-#[derive(Debug, Deserialize)]
-#[serde(rename_all = "camelCase")]
-pub(crate) struct PlaylistItemData {
-    pub video_id: String,
-}
-
-#[serde_as]
-#[derive(Debug, Deserialize)]
-#[serde(rename_all = "camelCase")]
-pub(crate) struct MusicContentsRenderer<T> {
-    pub contents: Vec<T>,
-    #[serde_as(as = "Option<VecSkipError<_>>")]
-    pub continuations: Option<Vec<MusicContinuation>>,
-}
-
-#[derive(Debug, Deserialize)]
-pub(crate) struct MusicColumn {
-    #[serde(
-        rename = "musicResponsiveListItemFlexColumnRenderer",
-        alias = "musicResponsiveListItemFixedColumnRenderer"
-    )]
-    pub renderer: MusicColumnRenderer,
-}
-
-#[serde_as]
-#[derive(Debug, Deserialize)]
-pub(crate) struct MusicColumnRenderer {
-    pub text: TextComponent,
-}
-*/
-
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub(crate) struct MusicContinuation {

src/client/response/music_item.rs

@@ -0,0 +1,220 @@
+use serde::Deserialize;
+use serde_with::{serde_as, DefaultOnError};
+
+use crate::{
+    model::{self, ChannelId},
+    serializer::{text::TextComponents, MapResult},
+    util::{self, TryRemove},
+};
+
+use super::ThumbnailsWrap;
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct MusicItem {
+    pub music_responsive_list_item_renderer: InnerMusicItem,
+}
+
+#[serde_as]
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct InnerMusicItem {
+    pub thumbnail: MusicThumbnailRenderer,
+    #[serde(default)]
+    #[serde_as(deserialize_as = "DefaultOnError")]
+    pub playlist_item_data: Option<PlaylistItemData>,
+    pub flex_columns: Vec<MusicColumn>,
+    pub fixed_columns: Vec<MusicColumn>,
+}
+
+#[derive(Default, Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct MusicThumbnailRenderer {
+    #[serde(alias = "croppedSquareThumbnailRenderer")]
+    pub music_thumbnail_renderer: ThumbnailsWrap,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct PlaylistItemData {
+    pub video_id: String,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct MusicContentsRenderer<T> {
+    pub contents: Vec<T>,
+    /*
+    /// Continuation token for fetching recommended items
+    #[serde(default)]
+    #[serde_as(as = "VecSkipError<_>")]
+    pub continuations: Vec<MusicContinuation>,
+    */
+}
+
+#[derive(Debug, Deserialize)]
+pub(crate) struct MusicColumn {
+    #[serde(
+        rename = "musicResponsiveListItemFlexColumnRenderer",
+        alias = "musicResponsiveListItemFixedColumnRenderer"
+    )]
+    pub renderer: MusicColumnRenderer,
+}
+
+#[serde_as]
+#[derive(Debug, Deserialize)]
+pub(crate) struct MusicColumnRenderer {
+    pub text: TextComponents,
+}
+
+impl From<MusicThumbnailRenderer> for Vec<model::Thumbnail> {
+    fn from(tr: MusicThumbnailRenderer) -> Self {
+        tr.music_thumbnail_renderer.thumbnail.into()
+    }
+}
+
+/*
+#MAPPER
+*/
+
+#[derive(Debug)]
+pub(crate) struct MusicListMapper<T> {
+    artists: Option<Vec<ChannelId>>,
+
+    pub items: Vec<T>,
+    pub warnings: Vec<String>,
+}
+
+impl<T> MusicListMapper<T> {
+    pub fn new() -> Self {
+        Self {
+            artists: None,
+            items: Vec::new(),
+            warnings: Vec::new(),
+        }
+    }
+
+    pub fn with_artists(artists: Vec<ChannelId>) -> Self {
+        Self {
+            artists: Some(artists),
+            items: Vec::new(),
+            warnings: Vec::new(),
+        }
+    }
+
+    fn map_music_item(&mut self, item: MusicItem) -> Option<model::YouTubeMusicItem> {
+        let item = item.music_responsive_list_item_renderer;
+
+        let first_tn = item
+            .thumbnail
+            .music_thumbnail_renderer
+            .thumbnail
+            .thumbnails
+            .first();
+
+        let id = some_or_bail!(
+            item.playlist_item_data
+                .map(|d| d.video_id)
+                .or_else(|| first_tn.and_then(|tn| util::video_id_from_thumbnail_url(&tn.url))),
+            None
+        );
+
+        let is_video = !first_tn.map(|tn| tn.height == tn.width).unwrap_or_default();
+
+        let duration = item.fixed_columns.first().and_then(|col| {
+            col.renderer
+                .text
+                .0
+                .first()
+                .and_then(|txt| util::parse_video_length(txt.as_str()))
+        });
+
+        let mut columns = item.flex_columns;
+
+        let album = columns.try_swap_remove(2).and_then(|col| {
+            col.renderer
+                .text
+                .0
+                .into_iter()
+                .find_map(|c| model::AlbumId::try_from(c).ok())
+        });
+
+        let artists_col = columns.try_swap_remove(1);
+        let artists_txt = artists_col
+            .as_ref()
+            .map(|col| col.renderer.text.to_string());
+        let mut artists = artists_col
+            .map(|col| {
+                col.renderer
+                    .text
+                    .0
+                    .into_iter()
+                    .filter_map(|c| ChannelId::try_from(c).ok())
+                    .collect::<Vec<_>>()
+            })
+            .unwrap_or_default();
+        if let Some(a) = &self.artists {
+            if artists.is_empty() {
+                artists = a.clone();
+            }
+        }
+
+        let title = columns
+            .try_swap_remove(0)
+            .map(|col| col.renderer.text.to_string());
+
+        match (title, duration) {
+            (Some(title), Some(duration)) => {
+                Some(model::YouTubeMusicItem::Track(model::TrackItem {
+                    id,
+                    title,
+                    duration,
+                    cover: item.thumbnail.into(),
+                    artists,
+                    artists_txt,
+                    album,
+                    view_count: None,
+                    is_video,
+                }))
+            }
+            (None, _) => {
+                self.warnings
+                    .push(format!("track {}: could not get title", id));
+                None
+            }
+            (_, None) => {
+                self.warnings
+                    .push(format!("track {}: could not parse duration", id));
+                None
+            }
+        }
+    }
+}
+
+/*
+impl MusicListMapper<model::YouTubeMusicItem> {
+    fn map_item(&mut self, item: MusicItem) {
+        if let Some(mapped) = self.map_music_item(item) {
+            self.items.push(mapped);
+        }
+    }
+
+    pub(crate) fn map_response(&mut self, mut res: MapResult<Vec<MusicItem>>) {
+        self.warnings.append(&mut res.warnings);
+        res.c.into_iter().for_each(|item| self.map_item(item));
+    }
+}
+*/
+
+impl MusicListMapper<model::TrackItem> {
+    fn map_item(&mut self, item: MusicItem) {
+        if let Some(model::YouTubeMusicItem::Track(track)) = self.map_music_item(item) {
+            self.items.push(track);
+        }
+    }
+
+    pub(crate) fn map_response(&mut self, mut res: MapResult<Vec<MusicItem>>) {
+        self.warnings.append(&mut res.warnings);
+        res.c.into_iter().for_each(|item| self.map_item(item));
+    }
+}

src/client/response/music_playlist.rs

@@ -2,20 +2,27 @@ use serde::Deserialize;
 use serde_with::serde_as;
 use serde_with::VecSkipError;
 
-use crate::serializer::text::Text;
-
-use super::MusicThumbnailRenderer;
-use super::{
-    ContentRenderer, ContentsRenderer, MusicContentsRenderer, MusicContinuation, MusicItem,
+use crate::serializer::{
+    text::{Text, TextComponents},
+    MapResult, VecLogError,
 };
 
+use super::music_item::{MusicContentsRenderer, MusicItem, MusicThumbnailRenderer};
+use super::{ContentRenderer, ContentsRenderer, MusicContinuation};
+
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
-pub(crate) struct PlaylistMusic {
+pub(crate) struct MusicPlaylist {
     pub contents: Contents,
     pub header: Header,
 }
 
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct MusicPlaylistCont {
+    pub continuation_contents: ContinuationContents,
+}
+
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub(crate) struct Contents {
@@ -48,17 +55,12 @@ pub(crate) struct ItemSection {
 pub(crate) struct MusicShelf {
     /// Playlist ID (only for playlists)
     pub playlist_id: Option<String>,
-    #[serde_as(as = "VecSkipError<_>")]
-    pub contents: Vec<PlaylistMusicItem>,
+    #[serde_as(as = "VecLogError<_>")]
+    pub contents: MapResult<Vec<MusicItem>>,
     /// Continuation token for fetching more (>100) playlist items
-    #[serde_as(as = "Option<VecSkipError<_>>")]
-    pub continuations: Option<Vec<MusicContinuation>>,
-}
-
-#[derive(Debug, Deserialize)]
-#[serde(rename_all = "camelCase")]
-pub(crate) struct PlaylistMusicItem {
-    pub music_responsive_list_item_renderer: MusicItem,
+    #[serde(default)]
+    #[serde_as(as = "VecSkipError<_>")]
+    pub continuations: Vec<MusicContinuation>,
 }
 
 #[derive(Debug, Deserialize)]
@@ -71,7 +73,7 @@ pub(crate) struct Header {
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub(crate) struct HeaderRenderer {
-    #[serde_as(as = "crate::serializer::text::Text")]
+    #[serde_as(as = "Text")]
     pub title: String,
     /// Content type + Channel/Artist + Year.
     /// Missing on artist_tracks view.
@@ -79,17 +81,27 @@ pub(crate) struct HeaderRenderer {
     /// `"Playlist", " • ", <"Best Music">, " • ", "2022"`
     ///
     /// `"Album", " • ", <"Helene Fischer">, " • ", "2021"`
-    pub subtitle: Option<Text>,
+    #[serde(default)]
+    pub subtitle: TextComponents,
     /// Playlist description. May contain hashtags which are
     /// displayed as search links on the YouTube website.
-    #[serde_as(as = "Option<crate::serializer::text::Text>")]
+    #[serde_as(as = "Option<Text>")]
     pub description: Option<String>,
     /// Playlist thumbnail / album cover.
     /// Missing on artist_tracks view.
-    pub thumbnail: Option<MusicThumbnailRenderer>,
+    #[serde(default)]
+    pub thumbnail: MusicThumbnailRenderer,
     /// Number of tracks + playtime.
     /// Missing on artist_tracks view.
     ///
     /// `"64 songs", " • ", "3 hours, 40 minutes"`
-    pub second_subtitle: Option<Text>,
+    #[serde(default)]
+    #[serde_as(as = "Text")]
+    pub second_subtitle: Vec<String>,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct ContinuationContents {
+    pub music_playlist_shelf_continuation: MusicShelf,
 }

src/model/mod.rs

@@ -25,8 +25,11 @@ use self::richtext::RichText;
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
 #[non_exhaustive]
 pub struct Thumbnail {
+    /// Thumbnail URL
     pub url: String,
+    /// Thumbnail image width
     pub width: u32,
+    /// Thumbnail image height
     pub height: u32,
 }
 
@@ -590,7 +593,7 @@ pub struct ChannelTag {
 }
 
 /*
-@COMMENTS
+#COMMENTS
 */
 
 /// Verification status of a channel
@@ -840,7 +843,7 @@ pub struct ChannelItem {
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
 #[non_exhaustive]
 pub struct PlaylistItem {
-    /// Unique YouTube Playlist-ID (e.g. `PL5dDx681T4bR7ZF1IuWzOv1omlRbE7PiJ`)
+    /// Unique YouTube playlist ID (e.g. `PL5dDx681T4bR7ZF1IuWzOv1omlRbE7PiJ`)
     pub id: String,
     /// Playlist name
     pub name: String,
@@ -851,3 +854,164 @@ pub struct PlaylistItem {
     /// Number of playlist videos
     pub video_count: Option<u64>,
 }
+
+/*
+#MUSIC
+*/
+
+/// YouTube Music list item
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+pub enum YouTubeMusicItem {
+    Track(TrackItem),
+    Artist(ArtistItem),
+    Album(AlbumItem),
+    Playlist(MusicPlaylistItem),
+}
+
+/// YouTube Music track list item
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[non_exhaustive]
+pub struct TrackItem {
+    /// Unique YouTube video ID
+    pub id: String,
+    /// Track title
+    pub title: String,
+    /// Track duration in seconds
+    pub duration: u32,
+    /// Album cover
+    pub cover: Vec<Thumbnail>,
+    /// Artists of the track
+    ///
+    /// **Note:** this field only contains artists that have a link attached
+    /// to them. You may want to use `artists_txt` as a fallback.
+    pub artists: Vec<ChannelId>,
+    /// Full content of the artists column
+    ///
+    /// Conjunction words/characters depend on language and fetched page.
+    /// Includes unlinked artists.
+    pub artists_txt: Option<String>,
+    /// Album of the track
+    pub album: Option<AlbumId>,
+    /// View count
+    ///
+    /// [`None`] if it is a not a video or the view count could not be extracted.
+    pub view_count: Option<u64>,
+    /// True if the track is a music video
+    pub is_video: bool,
+}
+
+/// YouTube Music artist list item
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[non_exhaustive]
+pub struct ArtistItem {
+    /// Unique YouTube channel ID
+    pub id: String,
+    /// Artist name
+    pub name: String,
+    /// Artist avatar/profile picture
+    pub avatar: Vec<Thumbnail>,
+    /// Approximate number of subscribers
+    ///
+    /// [`None`] if hidden by the owner or not present.
+    pub subscriber_count: Option<u64>,
+}
+
+/// YouTube Music album list item
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[non_exhaustive]
+pub struct AlbumItem {
+    /// Unique YouTube album ID (e.g. `OLAK5uy_nZpcQys48R0aNb046hV-n1OAHGE4reftQ`)
+    pub id: String,
+    /// Album name
+    pub name: String,
+    /// Album cover
+    pub cover: Vec<Thumbnail>,
+    /// Artists of the album
+    pub artists: Vec<ChannelId>,
+    /// Release year of the album
+    pub year: u16,
+}
+
+/// YouTube Music playlist list item
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[non_exhaustive]
+pub struct MusicPlaylistItem {
+    /// Unique YouTube playlist ID (e.g. `PL5dDx681T4bR7ZF1IuWzOv1omlRbE7PiJ`)
+    pub id: String,
+    /// Playlist name
+    pub name: String,
+    /// Playlist thumbnail
+    pub thumbnail: Vec<Thumbnail>,
+    /// Channel of the playlist
+    pub channel: Option<ChannelTag>,
+    /// Number of tracks in the playlist
+    pub track_count: Option<u64>,
+    /// True if the playlist is from YouTube Music
+    pub from_ytm: bool,
+}
+
+/// YouTube Music album type
+#[derive(Default, Debug, Copy, Clone, Serialize, Deserialize, PartialEq, Eq)]
+pub enum AlbumType {
+    /// Regular album (default)
+    #[default]
+    Album,
+    /// Extended play
+    Ep,
+    /// Single
+    Single,
+}
+
+/// Album identifier
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[non_exhaustive]
+pub struct AlbumId {
+    /// Unique YouTube album ID (e.g. `MPREb_O2gXCdCVGsZ`)
+    pub id: String,
+    /// Album name
+    pub name: String,
+}
+
+/// YouTube music playlist object
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[non_exhaustive]
+pub struct MusicPlaylist {
+    /// Unique YouTube playlist ID (e.g. `PL5dDx681T4bR7ZF1IuWzOv1omlRbE7PiJ`)
+    pub id: String,
+    /// Playlist/album name
+    pub name: String,
+    /// Playlist thumbnail
+    pub thumbnail: Vec<Thumbnail>,
+    /// Channel of the playlist
+    pub channel: Option<ChannelId>,
+    /// Playlist description in plaintext format
+    pub description: Option<String>,
+    /// Number of tracks in the playlist
+    pub track_count: Option<u64>,
+    /// True if the playlist is from YouTube Music
+    pub from_ytm: bool,
+    /// Playlist tracks
+    pub tracks: Paginator<TrackItem>,
+}
+
+/// YouTube music album object
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[non_exhaustive]
+pub struct MusicAlbum {
+    /// Unique YouTube album ID (e.g. `MPREb_O2gXCdCVGsZ`)
+    pub id: String,
+    /// Unique YouTube playlist ID (e.g. `OLAK5uy_nZpcQys48R0aNb046hV-n1OAHGE4reftQ`)
+    pub playlist_id: Option<String>,
+    /// Album name
+    pub name: String,
+    /// Album cover
+    pub cover: Vec<Thumbnail>,
+    /// Artists of the album
+    pub artists: Vec<ChannelId>,
+    /// Music album type
+    pub album_type: AlbumType,
+    /// Release year
+    pub year: u16,
+    /// Album tracks
+    pub tracks: Vec<TrackItem>,
+}

src/serializer/text.rs

@@ -113,6 +113,7 @@ pub(crate) enum TextComponent {
 /// runs aka components, which can be simple strings or links.
 #[derive(Deserialize)]
 struct RichTextInternal {
+    #[serde(default)]
     runs: Vec<RichTextRun>,
 }
 
@@ -295,7 +296,7 @@ impl TryFrom<TextComponent> for crate::model::ChannelId {
                 page_type,
                 browse_id,
             } => match page_type {
-                PageType::Channel => Ok(crate::model::ChannelId {
+                PageType::Channel | PageType::Artist => Ok(crate::model::ChannelId {
                     id: browse_id,
                     name: text,
                 }),
@@ -306,6 +307,24 @@ impl TryFrom<TextComponent> for crate::model::ChannelId {
     }
 }
 
+impl TryFrom<TextComponent> for crate::model::AlbumId {
+    type Error = ();
+
+    fn try_from(value: TextComponent) -> Result<Self, Self::Error> {
+        match value {
+            TextComponent::Browse {
+                text,
+                page_type: PageType::Album,
+                browse_id,
+            } => Ok(Self {
+                id: browse_id,
+                name: text,
+            }),
+            _ => Err(()),
+        }
+    }
+}
+
 impl From<TextComponent> for crate::model::richtext::TextComponent {
     fn from(component: TextComponent) -> Self {
         match component {
@@ -343,6 +362,23 @@ impl From<TextComponents> for crate::model::richtext::RichText {
     }
 }
 
+impl TextComponent {
+    pub fn as_str(&self) -> &str {
+        match self {
+            TextComponent::Video { text, .. } => text,
+            TextComponent::Browse { text, .. } => text,
+            TextComponent::Web { text, .. } => text,
+            TextComponent::Text { text } => text,
+        }
+    }
+}
+
+impl ToString for TextComponents {
+    fn to_string(&self) -> String {
+        self.0.iter().map(|x| x.as_str()).collect::<String>()
+    }
+}
+
 #[derive(Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub(crate) struct AccessibilityText {
@@ -669,6 +705,14 @@ mod tests {
         "###);
     }
 
+    #[test]
+    fn t_links_empty() {
+        let test_json = r#"{"ln": {}}"#;
+
+        let res = serde_json::from_str::<SLinks>(&test_json).unwrap();
+        assert!(res.ln.0.is_empty())
+    }
+
     #[test]
     fn t_attributed_description() {
         let test_json = r#"{

src/util/mod.rs

@@ -330,6 +330,16 @@ pub fn escape_html(input: &str) -> String {
     buf
 }
 
+pub fn video_id_from_thumbnail_url(url: &str) -> Option<String> {
+    static URL_REGEX: Lazy<Regex> =
+        Lazy::new(|| Regex::new(r"^https://i.ytimg.com/vi/([A-Za-z0-9_-]{11})/").unwrap());
+    URL_REGEX
+        .captures(url)
+        .ok()
+        .flatten()
+        .and_then(|cap| cap.get(1).map(|x| x.as_str().to_owned()))
+}
+
 #[cfg(test)]
 mod tests {
     use std::{fs::File, io::BufReader, path::Path};